As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TRANSITION FROM HIGH CLIMB POWER TO CRUISE POWER LT ENGINE APPEARED TO SURGE. ALL ENGINE INDICATIONS WERE NORMAL PRIOR TO AND AFTER SURGE EVENT. REMOVED BLVL CONTROL C8E38-9 AND INSTALLED BLVL CONTROL C8E38-12, OPERATIONAL CHECK NORMAL. (M)